5.9L 12v Cummins - The 12 valve Cummins, also known as the '6BT', was first offered in a Dodge pickup for the 1989 model year. The direct injected, turbocharged, fully mechanical inline six cylinder revolutionized the light duty diesel industry.

5.9L 24v Cummins - The B series Cummins received a new 4 valve-per-cylinder head design for the 1998.5 model year, spawning the 24v model. For 2003, the mechanical injection pump was retired and the mighty "Common Rail" was born.

6.7L Cummins - To meet strict Federal emissions regulations and pave the way for growth of the B series Cummins in Ram pickups, the 6.7L Cummins replaced the 5.9L mid-model year in 2007.

Featured Cummins Tech:

Ram 3.0L EcoDiesel - FCA's Ram Truck Division began offering the 3.0L EcoDiesel V-6 in Ram 1500 pickup models in 2014. The engine became an instant success, despite disappointment that a Cummins option was turned down in favor of the Italian V-6.

Nissan Frontier Diesel Runner - While a diesel powered Nissan Titan is official, there's been no confirmation in a diesel option for the mid-size Frontier. However, a 2.8L Cummins powered concept appeared at the 2014 Chicago auto Show.

2.8L Cummins Specs - Originally part of a partnership between Cummins, Nissan, and the DOE in developing a fuel efficient Nissan Titan, the 2.8L Cummins just may show up as a future option in the smaller, mid-size Nissan Frontier pickup line.

4BT (3.9L) Cummins - Based on the same architecture as the original 6BT, the 4 cylinder 4BT Cummins is a popular choice for engine swaps and diesel conversions.

53 Block Casting - Information on the infamous "53" block castings of many 1999 - 2001 24v Cummins, which are prone to cracking around the water jackets.

Killer Dowel Pin (KDP) - The 12v Cummins (6BT) Achilles heel is the KDP, a small dowel pin used to align the timing gear housing during initial assembly.